Re: [android-developers] Re: reading file from SDcard

On Mon, Apr 30, 2012 at 6:03 PM, Mark Murphy <mmurphy@commonsware.com> wrote:

On Mon, Apr 30, 2012 at 8:26 AM, RLScott <fixthatpiano@yahoo.com> wrote:
> It has been my experience that
> Environment.getExternalStorageDirectory() which you mentioned
> generally points to the built-in kind of external memory.

It points to whatever the device manufacturer chose to point it to. On
some devices, it is removable; on some devices, it is not.

> So if you
> want to access the real removable SD card file system there is no way
> I know of other than hard-wiring the actual path name, or letting the
> user enter it on a form (assuming the user even knows what the path
> name is).

Or not using it.

Or waiting for the Android SDK to support multiple "external" mount points.

Or waiting for somebody to crowdsource a database of available
standard mount points and their accessibility (just because /mnt/foo
exists does not mean you can read or write to it, or that the user can
access it), and waiting for somebody to create some sort of JAR that
leverages this crowdsourced database, so you can determine the
available options for your hardware to present to the user.

>  For example, on the Acer Iconia Tablet A-100 there is
>
>  /mnt/sdcard         (built-in "external" memory")
>  /mnt/external_sd  (removable SD card)

You will note that neither of these is /sdcard, which was my point to the OP.

--
Mark Murphy (a Commons Guy)
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Go to vijayvargiyarahul.blogspot.in

Give the example how to reading a file from SD Card 

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